. Bulletin. Natural history; Natural history. 156 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 21, Art. 4 Clasper ,,. Fig. 90.—Athripsodes alagnuis sclerotized lateral arms arise at the ex- treme base, progressing for a distance parallel with the rest of the tergite; moderately upturned near apex and with the end truncate. Cerci short, as wide as long and deeply incised laterally near apex to form a narrow apical pro- jection on the mesal side. Claspers with the basal portion projecting into a long, pointed process, the apical lobe sub- membranous, fusiform and markedly curved caudad; the scl
. Bulletin. Natural history; Natural history. 156 ILLINOIS NATURAL HISTORY SURVEY BULLETIN Vol. 21, Art. 4 Clasper ,,. Fig. 90.—Athripsodes alagnuis sclerotized lateral arms arise at the ex- treme base, progressing for a distance parallel with the rest of the tergite; moderately upturned near apex and with the end truncate. Cerci short, as wide as long and deeply incised laterally near apex to form a narrow apical pro- jection on the mesal side. Claspers with the basal portion projecting into a long, pointed process, the apical lobe sub- membranous, fusiform and markedly curved caudad; the sclerotized process curved, either slightly truncate or round- ed at apex. The basal portion of each clasper has a baso-mesal projection which is truncate, with a basal thread and a semitruncate or semiangulate smaller projection just above this on the meson. Oedagus short and deep with a small lateral flange and with the apex pointed. Of the internal structures, the most conspicuous is a pair of heavily sclerotized spines which are more than half the length of the oedagus, bulbous at base and pointed at apex. Holotype, male.—Fox Lake, Illinois; July 1, 1931, Prison, Betten & Ross. Paratypes.—Illinois.—Antioch: July 7, 1932, Prison & Metcalf, 2d'. Pox Lake: Same data as for holotype, tcf. Pulton: July 20, 1927, Prison & Glasgow, 5cf. Homer Park: July 6, 1927, at light, Prison & Glasgow, Icf. McHenry: June 30, 1931, Prison, Betten & Ross, 1 S. Wisconsin.—Little St. Germaine Lake: Aug. 12, 1936, D. M. DeLong, 2d'. Athripsodes cophus new species Male.—Length 14 mm. Color of head, thorax, dorsum and venter of abdomen, and most of legs blackish brown to black, antennae slightly darker brown than head; apices of tibiae and all but apical segment of tarsi light brown; wing membrane pale yellowish brown, most of veins darker shades of brown. Pubescence of head a mixture of white and black hairs, that of thorax black and that of the remainder includ- ing the
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